Konnected UPS Backup Battery
A small lithium-ion battery UPS.
JonsBo C6 (Handle version)
65 USD + shipping from Amazon.
ElecGear USB Mini Enclosure
This is a M.2 enclosure that accepts only 2242 format.
Penn Elcom 12u Rack R8500-12
Good bye old friend. Welcome, new chick.
MaCase K248L 2U GPU chassis
This is a 2U case specifically designed to house a full consumer grade GPU.
XPC-230 2U chassis
A simple but interesting rackmount chassis from UK.
Beelink Mini S N5095
The low end of a mini PC.
Chenbro RM24100-L
Probably the best 2U chassis for home users.